Arid
DOI10.1016/j.zool.2010.11.003
Posture, speed, and habitat structure: three-dimensional hindlimb kinematics of two species of padless geckos
Fuller, Patrick O.; Higham, Timothy E.; Clark, Andrew J.
通讯作者Higham, Timothy E.
来源期刊ZOOLOGY
ISSN0944-2006
出版年2011
卷号114期号:2页码:104-112
英文摘要

Differences in habitat use are often correlated with differences in morphology and behavior, while animals in similar habitats often exhibit similarities in form and function. However, this has not been tested extensively among lizards, especially geckos. Most studies of gecko locomotion have focused on the ability to adhere to surfaces. However, there are several species of geckos that have either secondarily lost adhesive capabilities or simply lack the capability. We quantified the three-dimensional locomotor kinematics for two desert-dwelling padless geckos, Teratoscincus scincus and Eublepharis macularius, on a level trackway over a range of speeds. Our results indicate that T. scincus landed with a high relative hip height of 48.7 +/- 2.4% of total limb length at footfall, while E. macularius exhibited hip heights averaging only 36.0 +/- 1.8% of total limb length for footfall. The three-dimensional knee angle of T. scincus averaged 120.6 +/- 3.9 degrees at footfall, while E. macularius averaged only 101.6 +/- 1.8 degrees at footfall. In addition, the femur of E. macularius was elevated to a much greater extent (i.e., was closer to being perpendicular to the long axis of the body) than that of T. scincus and every other lizard that has been studied, suggesting they move with a "hyper-sprawled" posture. Both of these gecko species live in deserts, but T. scincus is psammophilic while E. macularius inhabits a rocky, more densely vegetated environment. Benefits of the more upright posture of T. scincus on open sandy habitat may include a greater field of view and more efficient locomotion. The more sprawled posture of E. macularius may lower its center of gravity and aid in balance while climbing on rocks or shrubs. (c) 2011 Elsevier GmbH. All rights reserved.


英文关键词Eublepharis macularius Teratoscincus scincus Locomotion Semi-erect posture Sprawled posture
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000290778800006
WOS关键词LIZARD DIPSOSAURUS-DORSALIS ; GAIT CHARACTERISTICS ; LACERTID LIZARDS ; ALLIGATOR-MISSISSIPPIENSIS ; LOCOMOTOR PERFORMANCE ; ANOLIS LIZARDS ; BODY-SIZE ; MORPHOLOGY ; EVOLUTION ; MUSCLE
WOS类目Zoology
WOS研究方向Zoology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/170880
作者单位Clemson Univ, Dept Biol Sci, Clemson, SC 29634 USA
推荐引用方式
GB/T 7714
Fuller, Patrick O.,Higham, Timothy E.,Clark, Andrew J.. Posture, speed, and habitat structure: three-dimensional hindlimb kinematics of two species of padless geckos[J],2011,114(2):104-112.
APA Fuller, Patrick O.,Higham, Timothy E.,&Clark, Andrew J..(2011).Posture, speed, and habitat structure: three-dimensional hindlimb kinematics of two species of padless geckos.ZOOLOGY,114(2),104-112.
MLA Fuller, Patrick O.,et al."Posture, speed, and habitat structure: three-dimensional hindlimb kinematics of two species of padless geckos".ZOOLOGY 114.2(2011):104-112.
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